Stoker smoking pipe



Dec. 12, 195o T. RBERTSON 2,533,956

STOKER SMOKING PIPE Filed Aug. '7, 1946 INvLNTozz, Tum/NE RoBrnTsoN,

ATTORNEV Patented Dec. 12, 1950 UNITED STATES PATENT 'OFFICE STOKER SMGKING PIPE Thayne Robertson, Boise, Idaho Application August '7, 1946, Serial No. 689,014

3 Claims.

This, invention relates to stoker smoking pipes and is regarded as an improvement on applicants Patent No, 2,402,914 issued June 25, 1946.

An object of this invention is to produce a pipe of the character indicated which comprises iewer parts of inexpensive construction and of a neater and more artistic appearance than that of the subject of the aforesaid patent.

A further object of the invention is to provide a smoking bowl and a reservoir in proximity, one to the other, and formed as a part of the same unit.

Furthermore, it is an object of the invention to provide simple means for operating a screw conveyor which moves the tobacco from the reservoir to the smoking bowl, the said means including the pipe bit, so connected to the screw conveyor that by turning the bit, the screw conveyor is rotated for transferring the tobacco as aforesaid, by which utility a comparatively inexpensive combination results.

With the foregoing and other objects in view, the invention consists in the details of construe tion, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention 1n detail, reference will be had to the accompanying drawings forming part of this application, wherein like charactors denote corresponding parts in the several views, and in which:

Figure 1 illustrates a longitudinal vertical sec tional view of the invention;

Figure 2 illustrates a sectional view thereof on the line 2-2 of Fig. l;

Figure 3 illustrates a transverse sectional view taken along line 3 3 of Figure 1, looking in the direction of the arrows; and

Figure i illustrates a transverse sectional view taken along the line l-i of Figure 1, lookingin the direction of the arrows.

In these drawings 5 denotes a body, shaped` to form a compartment 5 and a hopper 'l or reservoir, the former of which receives the tobacco to be smoked, whereas the latter contains a supply of tobacco which is transferred from time' to time by the operation of a screw conveyor 8 rotatably mounted and operative in the compartment and hopper and in channel 'l' be tween the hopper and compartment. The screw conveyor has an inner end e shaped to form a trunnion which is rotatable in a recess or bearing it formed in the surface of the wall of the compartment, and said screw conveyor is ro- 2 tated intermittently for carrying tobacco from the hopper to the bowl or compartment 6.

The wall of the hopper is apertured, as at Il, and a bushing or bearing I2 has its end anchored therein, in which the pipe bit I3 is rotatable. An end of the screw conveyor is provided with an externally threaded nipple i4 which is threaded in a recess l5 in the inner end of the bit. The screw conveyor 8 is provided with a longitudinally extending duct or channel I6 which communicates with the hollow nipple so that smoke may be drawn from the bowl through the said duct, it being understood that ports Il are formed between the convolutions of the screw conveyor in positions under the bowl so that smoke may pass through the ports to the duct and thence to the nipple and through the bit.

I claim:

1. A stoker smoking pipe comprising a body having a smoking bowl and a tobacco hopper with a channel between them, a screw conveyor having a trunnion at one journalled in the wall of the bowl and located in the channel, the said screw conveyor extending from the outer wall of the hopper to the outer wall of the bowl, the said screw conveyor having a longitudinal central duct and ports communicating with the duct whereby smoke from the bowl is delivered to the duct, a hollow nipple at the end of the screw conveyor opposite the trunnion communicating with the duct, the said nipple being threaded externally, a pipe bit threaded on the nipple, and means by which the bit is rotatably mounted in a wall of the hopper.

2. A stoker smoking pipe comprising a body having a smoking bowl and a tobacco hopper with a channel between them, a screw conveyor having a trunnion at one end journalled in the wall of the bowl and located in the channel, the said screw conveyor extending from the outer wall of the hopper to the outer wall of the bowl! the said screw conveyor having a longitudinal central duct and ports communicating with the duct whereby smoke from the bowl is delivered to the duct, ahollow nipple at the end of th screw conveyor opposite the trunnion communi#4 eating with the duct, a pipe bit attached to the nipple, and a bushing mounted in a wall of the hopper in which the bit is rotatably supported.

3. A smoking pipe comprising a body having a smoking bowl and a tobacco hopper with a channel therebetween, a screw conveyor located in the channel and extending from the outer 3 4 Wall of the hopper into the bowl, said conveyor REFERENCES CITED having a longitudinal neutral' duct' and ports The following references are of record in thecommunicating with the duct whereby smoke A from the bowl is delivered to the duct, a hollow me of this patent' nipple carried by the end of th conveyor adja.- g UNITED STATES PATENTS cent the hopper, a pipe bit connected to the Number Name Date nipple, amd.y means to rotatably mount the bit 136,437 Buynii-,Zky Mar. 4, 1873 Vin the Wall of Vthe hopper whereby rotation of 2,218,853 Nash Oct. 2,2, 1940 the bit moves the tobacco from the hopper to 2,402,914 Robertson June 25, 1946 the smoking bowl.

THAYNE ROBERTSON. 

